Originally Posted by dioioib
You can take the SD card out of the unit and re-image it. So your unit is probably not totally bricked. You just need an image of the Kobo firmware as a .img and use a program in linux like dd to copy it back.
I upgraded my internal card to 16 gb class 10 a while back. If I can find my old 2gb card I could make an image but I might have some trouble finding it.